On Tue, 2008-03-25 at 12:28 +0800, Ke Wei wrote: > I found that sending REPORT_LUNS command to some DVD device will > cause fis error and controller error record. As a result, scsi mid layer > get some wrong LUNs. Also I can get some queer messages. > > scsi: host 12 channel 0 id 2 lun 0x30302e302f686f73 has a LUN larger > than currently supported. > scsi: host 12 channel 0 id 2 lun 0x7431322f706f7274 has a LUN larger > than currently supported. > scsi: host 12 channel 0 id 2 lun 0x2d31323a322f656e has a LUN larger > than currently supported. > ... > > The patch forced to clear the sg buffer of SATA response if FIS is > error. But I suggest these codes should remove to the libsas module. My first observation is that this isn't the correct approach: Most of the CD/DVD simply respond with an error or the correct information. The odd media changer will actually respond with real LUNs. Doing a blanket erase of the REPORT LUN information will cause problems for media changers. I think the correct way to fix your problem is to blacklist the particular CD. We have a BLIST_NOREPORTLUN for devices which behave like this ... what are the INQUIRY strings? James -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
